An eight year old has between 206 and 300 bones, that is because when a baby is inside the womb it has 300 bones. However after the child is born some of the skull bones grow together which results in a lower overall number of bones as compared to an adult which has 206 bones. The skull bones number  22. It would be some of these skull bones that would become fused together as the baby grows. Amazingly, the hand has 54 bones each while the feet have 52 bones.